Change your driving habits a little
In general, the faster you go, the more gas you
use. The defunct "Drive 55" campaign in the U.S.A.
was not only a safety measure, it was also an
energy conservation measure: cars use less gas at
55 mph (90 kph) than at 65 mph (105 kph). Leave ten
minutes earlier than you planned to, and drive a
little slower than you normally do. As a bonus,
you'll have more reaction time and may keep
yourself out of an accident.
- Heavy acceleration and hard braking
greatly reduce gas mileage. Smooth acceleration
from traffic lights and gradual braking at stop
signs will help more than you might think. And
if you're driving through a residential area,
you'll make it a safer and more pleasant place for
the folks who live there.
- Constant speeds, rather than speeding
up and slowing down, help enormously. That's why
highway gas mileage estimates are always higher
than the estimates for around-town driving. If
you can plan your route to avoid strings of
traffic lights, stop signs or children's play
areas, your gas mileage will definitely improve.
- In most cars, the air conditioner
draws power from the engine, using a belt.
Every time that you turn on the air conditioner,
the engine has to use more gas to keep the car
moving. Although opening the windows can also
reduce your gas mileage by reducing the
aerodynamic efficiency, it's still better than
running the air conditioner.
- Overloading the car makes the engine
work overly hard and consume extra gas. If you
can split the luggage (or building supplies)
between two vehicles, then do it. This doesn't
mean, however, that you ought to take two cars
when one car will suffice.